Improvement in windlasses



m a. IM-BACH Windl ass.

Patented March 9,1875.

THE GRAPHIC CO.PHOTO.-LITH.39 8 41 PARK PLACE,N.Y.

Unrrnn STATES Pn'rnnr @rnron MARTIN G. IMBAGH, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN WINDLASSES.

Specification forming part of Letters Patent No. 160,675, dated March 9, 1875; application filed February 4, 1875.

To all whom it may concern:

Be it known that I, MARTIN G. IMBACH, ol' the city of Brooklyn, in the county of Kings and State of New York, have invented certain Improvements in Windlasses; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawing, forming part of this specification, and in which- Figure 1 represents a side elevation of a Windlass constructed in accordance with my invention; Fig. 2, a sectional elevation in direction of the length of the axis of the windlass on the line a: m,- Fig. 3, a sectional elevation transversely to said axis on the line 3 y, and Fig. 4 a horizontal section on the line z z.

This invention relates to windlasses, or apparatus for raising and lowering purposes, in which the hoisting-barrel is actuated by differential gear. The invention consists in a novel combination of devices, constituting a differential gear for operating the Windlass-bar'- rel, whereby great simplicity of parts and efiioiency is obtained. It also consists in a combination, with said devices, of a loose pinionsleeve and stop or catch for releasing the barrel when required, so that it may run free and it furthermore consists in a combination, with said devices, of an independent stop or catch for actuating the barrel at a quick speed, in a direct manner, as it were, or Without the in terposition of the differential gear.

A represents an ordinary Windlass-barrel, constructed to turn in checks or standards B B. Fast to the axle or shaft 0 of said barrel is a wheel, D, and concentric with said wheel, but stationary or fast to the main frame, is a wheel or circular rack, E. F is a revolving yoke, arranged to turn loosely on the shaft 0, and carrying, or being constructed to form, at its outer end, a box, b, in which is fitted to turn a sleeve, 0, that is loose on a shaft, d. This sleeve 0 has fast on it a pinion, e, which gears with the wheel D, and the shaft 61 has fast on it a pinion, f, which gears with the circular rack E. The pinion c has one or more teethin it than the pinion f, and the wheel D one or more less teeth in it than the stationary wheel or circular rack E; or these several wheels and pinions may be otherwise proportioned to give the necessary differential movement. Secured to the outer end of the shaft 61 is an operating crank or handle, G, and connected with said crank is a stop or catch, h, of any suitable construction, and which may either be adjusted to lock with a toothed disk, 71, fast on the sleeve 0, or to be disconnected therefrom.

When the catch h is in gear or lock with the toothed disk 43, then the shaft d, which is operated by the crank G, and which not only rotates on its own axis, but also, by the yoke F, around the axis of the Windlass-barrel, is geared or connected with the sleeve 0, so that the pinions cf are made to rotate in common with or round their respective wheels, or wheel and rack, Dand E, and, on the crank G being rotated, a slow but powerful movement is 00111 municated to the barrel A by the action of the differential gear 0 f D E. When thus operating the sleeve 0 ceases to be loose, and the pinions ef are both virtually fast to the shaft d, the catch h in such case only being a convenient means of making the pinion 6 fast to turn in common with the shaft 61 and its pinion f.

When it is required to run the Windlass-barrel A loose, then the catch h is released from the toothed disk 1', which leaves the sleeve 0, with its pinion 6, free to be turned by the wheel D in common with the barrel. When, again, it is necessary to operate the barrel A by the crank G at a quick velocity, or without the aid of the differential movement-as, for instance, in taking up slack or liftinglight weightsthen not only is the catch it thrown out of lock with the toothed disk i, but the revolving yoke F is put into gear with the wheel D by a stop or catch, is, pivoted at s, or otherwise connected with the yoke, so that on turning the crank G the barrel A is rotated at a velocity correspondingwith the travel of the pinion f around the circular rack E. These several combinations obtain for the Windlass, in a simple and efficient manner, all the necessary changes as regards a quick or loose speed, and free run of the barrel when required.

The barrel A may, as represented, be provided with a brake of any suitable construction.

When it is desired to work the windlass by steam-power instead of by hand, then there may be substituted for the crank G any other suitable device for rotating the shaft 01, and

the stop or catch it be connected with said operating device. Thus, there may be, a pulley loose on the shaft 0 outside of the yoke F, and another pulley fast on the shaft d, driven by chain, belt, or otherwise from the former pulley, and forming a substitute for thecrank G. Or, again, when driving the Windlass by horse-power, with the axis of its barrel arranged vertically instead of horizontally, any suitable lever or bar may be made the operatin g device of the shaft d instead of the crank.

2. The combination of the loose sleeve 0 on the shaft 01, the stop or catch h, for connecting the sleeve with said shaft, the revolving yoke F, the pinions e f, the rotating wheel D, the fixed wheel or circular rack E, and the barrel A, essentially as described.

3. The stop or catch is, incombination with the revolving yoke F, loose on the barrel-shaft (l, the shaft 01, the pinion f, the fixed wheel or circular rack E, and the wheel D, with which the-catch locks, substantially as specified.

MARTIN G. IMBAOH.

Witnesses BENJAMIN W. HOFFMAN, FRED. HAYNES. 

